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Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) - 642-427 real prep

642-427
  • Exam Code: 642-427
  • Exam Name: Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0)
  • Updated: May 31, 2026
  • Q & A: 301 Questions and Answers
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Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:

1. Refer to the exhibit.

An IP phone that is connected through a Cisco Catalyst 3750 Series Switch is failing to register with Cisco Unified Communications Manager. When the user presses the settings button on the phone, the Operational VLAN ID shows a blank entry. What is the most likely cause for this issue?

A) The Operational VLAN ID of the phone always shows as blank. The Admin VLAN ID should be
110.
B) The trunk encapsulation is missing. The trunk must be configured for dot1.Q.
C) The spanning tree portfast command needs to be removed.
D) Cisco Discovery Protocol is disabled on the switch
E) The switch may not be supplying inline power.


2. Partition A contains four route patterns. The calling search space assigned to Device B contains only Partition A.
When Device B dials 1136, which of the route patterns will be selected?

A) 1[1-4]XX
B) 1[^2-8]XX
C) 11X!
D) 1[14]XX


3. You have received a trouble ticket stating that users in accounting are not able to use the CFwdAll softkey to forward their calls to voice mail. Their phones continue to ring when they receive inbound calls, even after they have pressed the CFwdAll softkey and the Messages button. What is a possible cause of this issue?

A) The voice-mail ports are not registered.
B) The phones are not configured to use the standard phone template.
C) The users have not been associated with their phones.
D) There is a database replication issue with the subscriber the phones are registered to.
E) The users have not been enabled to use CTI.


4. DRAG DROP


5. Refer to the exhibit.

When a Cisco Unified Communications Manager Express advertises the directory number pattern in the exhibit, what would the learned pattern be in the RTMT tool on the Cisco Unified Communications Manager?

A) \+1408[2-9]XXXXXX and the ToDID will be 0:+1408[2-9]XXXXXX
B) \+1408[2-9]XXXXXX and the ToDID will be 0:
C) [2-9] XXXXXX and the ToDID will be 0:+1408[2-9]XXXXXX
D) \+1408[2-9]XXXXXX and the ToDID will be empty
E) 1408[2-9]XXXXXX and the ToDID will be 0:+1408[2-9]XXXXXX


Solutions:

Question # 1
Answer: D
Question # 2
Answer: C
Question # 3
Answer: D
Question # 4
Answer: Only visible for members
Question # 5
Answer: D

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